Car-ventilator.



F. J. LINEHAN.

GAR VENTILATOR.

APPLICATION FILED 3.1. 1909.

942,45 1 Patented Dec. 7, 1909.

tion 8.

FRANK J. LINEHAN,-OF BOSTON, MASSACHUSETTS.

CAR-VENTILATOR.

Specification of Letters Patent.

Patented Dec- 1909- Applioation filed April 1, 1909. Serial No. 487,146.

To all whom it may concern:

Be it known that I, FRANK J. LINEI-IAN, a citizen of the United States, residing at Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Car-Ventilators, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to a ventilator adapted for use in a car, and it has for one of its objects to provide a novel ventilator which is simple and inexpensive to make and which will simultaneously admit fresh air to the car and provide for the escape of foul or vitiated air; and also to provide a car ventilator Which is reversible and willoperate equally well in whichever direction the car is moving and will not require any adjustment in order to enable it to operate properly when the car reverses its direction.

, I will first describe one embodiment of my invention and will then point out the novel features thereof in the appended claims.

Referring to the drawings wherein I have shown a selected embodiment of my invention, Figure 1 is a sectional view through the top of one side of a car showing my ventilator in position; Fig. 2 is a horizontal section through the ventilator; Fig. 3 is a side view with a portion broken out on the line mm, Fig. 2.

My improved ventilator is a double-ended one, that is, the two ends thereof are duplicates of each other, butare oppositely arranged, so that when the car is moving in one direction, one end of the car ventilator acts as a means for delivering fresh air to the car, while the other end acts as the means for withdrawing the foul air.

The ventilator herein shown is formed with two oppositely-disposed chambers 3, each having the top and bottom 4 and 5 and the side walls 6 and 7. The two chambers are separated from each other by the parti- Each chamber is opened at the end as at 9 and is provided with the vertical partition 10 which extends from the inner side of the open end 9 diagonally across the chamber 3, said partition terminating at a point 11 separated from the side wall 6. The space between the side wall 6 and the partition 10 forms a converging mouth which communicates with the remaining portion of the chamber through a throat or passageway 12. Each chamber 3 is provided with an opening 13 of considerable area in its bottom and referably this opening is situated back of the throat 12. As herein shown it extends from one side to the other of the chamber and from the partition 8 to the end of the partition 10. The side wall 7 is provided with a lateral opening 14 which leads into the car, and I prefer to provide a louver-like structure comprising the vertical deflecting wings 15 which are preferably inclined forwardly or toward the end of the ventilator. The lateral opening 14 is screened by means of a screen 16 which may conveniently extend from the end of the partition 11 to the side wall 7, as shown, although the position of this screen is not essential.

Both ends of the ventilator are duplicates of each other except that the partitions are oppositely arranged in the two ends.

My improved ventilator is especially designed to be used in the cupola of steam or electric cars, and may conveniently be made of such a size that it may be set into the ventilating window frames now frequently made in cars. When the ventilator is thus placed, the body is situated outside of the car with the open ends 9 directed toward the ends of the car and the louver-like structure 15 is in the car, or in the window frame of the car. The ventilator is provided on its under side with the depending fin 17 which is situated between the two openings 13 and which preferably extends the width of the ventilator.

When a car is equipped with my improved ventilator and is moving in the direction-of the arrow a in Fig. 2, the movement of the car will force a current of air through the open end 9 at the left Fig. 2 and through the throat 12 into the space beyond the throat. The air current will become somewhat congested at this point and the pressure within the space will cause part of the air to pass through the screen 16 and through the lateral opening 14 into the int'erior of the car and part of the air to pass down through the o ening 13 in the bottom of the ventilator. he current of air which passes down through the opening 13 is sufficient to carry out from the chamber any cinders or other solid matter, so that the air which enters the car is comparatively pure. The deflecting wings 15 operate to deflect this current of air forwardly into the car. At the same time that the air is thus being admitted to the car, my improved ventilator acts to withdraw vitiated air from the car, such vitiated air being withdrawn through the rear end of the ventilator. In effecting this result the fin 17 plays a very important part, for it will be evident that when the car is moving rapidly, the air which strikes the front face of the fin is deflected around the lower edge thereof, thus settin up a raritication or suction on the back side of the fin which causes air to be drawn through the openin 13 in the rear chamber. The current 0 air which passes down through the opening 13 in the front chamber assists in creating this suction and with the parts arranged as shown in the drawings, there will be sufficient suction formed to establish a considerable current down through the opening 13 at the rear of the ventilator, and the establishing of such a current draws air through the opening 14 as seen by the full line arrow in Fig. 2, and would also tend to draw air through the throat 12, but this latter tendency'is more than counteracted by the suction produced at the open mouth 9 at the rear of the ventilator, so that the suction produced at the rear of the ventilator will tend to assist the suction produced down through the opening 13 in removing the vitiated air from the car. It will thus be seen that the presence of the fin is an important feature 1n securing the Withdrawal of vitiated air from the car and that said fin also is an important feature in assisting to withdraw cinders and other solid matter from the air which enters the car.

The ventilator is symmetrically shaped, the purpose of this being so as to make it reversible.

It is not necessary to use the wings 15, but where they are employed they will tend to direct the fresh air into the car in a direction opposite to that from which the foul air is withdrawn and thus a complete circulation of air is provided.

I propose to place a ventilator of this nature at each window opening in the cupola 40 of the car, and if desired, the windows may be provided with swinging panes or sashes 20 by means of which either or both of the openings 14 may be closed. Under some conditions, it may be desirable to both admit fresh air to the car and to withdraw a suction outwardly through the lateral opening in the other chamber.

2. A ventilator for cars formed with symmetrically-arranged separate chambers each open at the end and each provided in its bottom with an opening of considerable area and a lateral opening in one side, and a fin depending from the bottom of the ventilator midway between the bottom openings.

3. The combination with a car, of a ventilator comprising a chamber exterior to the car, said chamber being open at one end and having an opening in its bottom of considerable area adapted to discharge a quantity of air admitted through said open end suiticient to discharge cinders and other solid matter and a lateral opening leading into the car, and a vertical partition extending from the inner side of the open mouth diagonally toward the opposite side but terminating at a point separated from said side.

4. A ventilator for cars comprising a chamber open at one end, a vertical partition extending from one side of said open end diagonally toward the other side but terminating at a point separated from said side, said chamber having anopening in its bottom at the rear of said artition, which opening extends from one side to the other thereof, and also having a lateral opening in the side with which said partition connects and a fin depending from the bottom adjacent the opening therein.

5. A ventilator for cars formed with symmetrically-arranged separate chambers, each open at the end and each provided with an opening of considerable area in its bottom and a'lateral openirig in one side near said open end, and a fin depending from the bottom of said ventilator midway between said bottom openings.

6. A ventilator for cars comprising a chamber having an opening of considerable area in its bottom, a lateral opening in one side and a diverging mouth leading from said chamber at the rear of the ventilator, and arin or wall depending from the ventilator infront of the opening in the bottom.

7. The combination with a car, of a ventilator therefor comprising a chamber situated exterior to the car and having an opening of considerable area in its bottom, a lateral opening in one side leading into the car, a d1verging mouth leading from said chamber to the rear of the ventilator, and a fin depending from the bottom of the ventilator in front of the opening therein.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

FRANK J. LINEHAN.

Witnesses:

WILLIAM H. WIELZMAN, WILLIAM. C. MAGUIRE. 

